PostgresqlCO.NF: Postgres Config Settings for Humans — “Our mission is to help you tune and optimize your PostgreSQL configuration.” And this is certainly a good place to start doing that as this epic resource lets you dig into all the different settings Postgres provides, explains what they’re about, and links to further resources. Here’s the story behind its creation.

Replication Configuration Changes in PostgreSQL 12 — Till now, replication configuration settings have been stored in a special file, recovery.conf, but in Postgres 12 the settings have been converted to normal Postgres config settings and so can now be managed in postgresql.conf or with ALTER SYSTEM, etc.